Thyroid nodules and thyroid cancer in pregnancy

Thyroid gland size increases during pregnancy due to physiological changes. 2-3% of pregnancies, a thyroid nodule (TN) may either newly develop or an existing one may increase in size. Factors such as age, parity, and iodine status can influence the development of TN. Surveillance of TN in pregnancy is essentially similar to that of the general population as it is contraindicated. Fine needle aspiration cytology (FNAC) can be delayed until after delivery unless malignancy is suspected. Surgery is reserved for severe cases, those with rapid growth, or those with suspicious features. Surgery is typically performed during the second trimester. Papillary thyroid carcinoma (PTC) is the most common type of thyroid cancer during pregnancy, which ranks second among cancers affecting pregnant women. Given the challenges involved, the prognosis is still favorable, have minimal impact on survival rates or recurrence. Treatment guidelines suggest regular monitoring of TSH and thyroid ultrasound (TUS), ensuring careful management of TC, especially in cases of aggressive.